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Hiroki
Hiroki
Explorer
May 2, 2023
Solved

After upgrading Fortigate v6.0.X to v7.0.11, Call Park using Sip server is no possible.

  • May 2, 2023
  • 4 replies
  • 4308 views

Dear　Team

 

I upgraded Fortigate v6.0.X to v7.0.11 according to the upgrade path.

After update We cannot call park with sip server.

 

We are using only FW policy for IP telphone . we do not use Voip profile .

 

I think that fortigate was changed default value v6 to v7. but I cannot find the information.

Could you have any infomation. 

Best answer by kvimaladevi

Hi Hiroki,

 

Could you provide us the topology showing the client and server connectivity. Also, please confirm if you are facing issues in picking the call or if you are able to connect but unable to hear the other end while call parking. 

Could you try to check if SIP ALG is disabled in the firewall as you say you do not use any VOIP profile in the policy.

 

Please refer to KB below
https://community.fortinet.com/t5/FortiGate/Troubleshooting-Tip-One-way-Audio-issue-in-VOIP-calls-caused-by/ta-p/203336

Regards,

Vimala

4 replies

kvimaladevi
Staff
kvimaladeviAnswer
Staff
May 2, 2023

Hi Hiroki,

 

Could you provide us the topology showing the client and server connectivity. Also, please confirm if you are facing issues in picking the call or if you are able to connect but unable to hear the other end while call parking. 

Could you try to check if SIP ALG is disabled in the firewall as you say you do not use any VOIP profile in the policy.

 

Please refer to KB below
https://community.fortinet.com/t5/FortiGate/Troubleshooting-Tip-One-way-Audio-issue-in-VOIP-calls-caused-by/ta-p/203336

Regards,

Vimala

    Hiroki
    HirokiAuthor
    Explorer
    May 2, 2023

    Thank you reply.  Our topology is the fllowing.

    NAT is not used between the router and Forti because it is a closed line.

     

    At first, there were no problems with all communication.

     

    After upgrading to v7.0, only C and D phones are having trouble.

     

    The trouble is that you can't use the call park. You won't hear any two-way sound either. However, you can make one-on-one calls such as A and D, B and C, etc.

     

    test.PNG

    abelio
    SuperUser
    abelio
    SuperUser
    May 2, 2023

    Hello,
    did you try:?

    config system settings
        set sip-expectation disable
    end

    funkylicious
    SuperUser
    funkylicious
    SuperUser
    May 2, 2023

    https://docs.fortinet.com/document/fortigate/7.0.0/new-features/644799/flow-based-sip-inspection

    "jack of all trades, master of none"
    A
    Anonymous_User
    New Contributor III
    May 8, 2023

    Hello Hiroki,


    There was a behavior change in SIP when upgrade from 6.4 to 7.0.x or 7.2.x, If you're using SIP ALG you need a policy in Proxy mode, Please verify the VOIP and policy mode.


    https://community.fortinet.com/t5/FortiGate/Technical-Tip-Changes-in-SIP-ALG-s-behavior-after-upgrading-on-7/ta-p/217022

      Hiroki
      HirokiAuthor
      Explorer
      May 9, 2023

      Hello all

       

      We resolved the issue.

      We disabled a session helper feature using the following technecal tip.

      Technical Tip: Disabling VoIP Inspection - Fortinet Community 

      Thank you again.

        thepphithak_P
        thepphithak_P
        Explorer
        June 4, 2025

        Thanks, I have a problem with making calls and not hearing the conversation.
        So I tried delete 13.
        and
        config system settings
            set default-voip-alg-mode proxy-based (default value).
        set default-voip-alg-mode kernel-helper-based
        Then reboot can fix this problem.

         

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